Omega · Constellation

Strap for Constellation Quartz 27 Polished Stainless Steel / Silver Silk

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter27 mm
Reference123.10.27.60.02.004 (aka: 12310276002004)
FamilyConstellation
MovementOmega caliber 1376 Hours, Minutes
CaseStainless Steel

Recommended spring bar

Spring bars Omega 18mm — single diameter

Technical match for lug width and diameter · lug 18 mm · Ø 1.8 mm

All Omega spring barsOpen →

The Constellation 123.10.27.60.02.004 (aka: 12310276002004), seen from the bench

The Omega Constellation 123.10.27.60.02.004 is a refined 27mm quartz watch from the Constellation collection, launched in 1952 as a symbol of precision and understated elegance. Featuring a polished stainless steel case with an integrated bracelet, this model houses the reliable Omega Caliber 1376 automatic movement and is water-resistant for daily urban and casual water exposure. The 18mm lug width is critical for proper aftermarket strap compatibility, ensuring a secure fit without lateral play or protrusion on the lugs.

Frequently asked questions

What is the lug width of the Omega Constellation 123.10.27.60.02.004?

The Omega Constellation 123.10.27.60.02.004 has a lug width of 18mm. This measurement is critical when purchasing aftermarket straps. To verify it, remove the integrated bracelet and measure the distance between the two contact points of the lugs on the case using a digital caliper.

Which strap material pairs best with the Constellation 123.10.27.60.02.004?

Dark alligator (black or brown) is the classic choice to maintain the model's understated elegance. Alternatively, vegetable-tanned calf offers natural aging and progressive patina, while a cotton NATO ensures sports versatility. The choice depends on usage context: formal with alligator, casual with NATO.

How do you change the strap on the Constellation 123.10.27.60.02.004?

The Constellation 123.10.27.60.02.004 is fitted with an integrated bracelet. To change the strap, you must remove the bracelet using replacement pins (usually supplied or available from watchmakers) and install the new 18mm strap in the same slots. We recommend having an experienced watchmaker perform this operation to avoid damaging the case. Milano Straps offers consultations for this procedure.

Which aftermarket straps are compatible with the Omega Constellation 123.10.27.60.02.004?

Any strap with an 18mm lug width is compatible with the Constellation 123.10.27.60.02.004, provided it features standard lugs (no integrated deployant). Milano Straps offers a selection of 18mm straps in alligator, calf, NATO, and rubber, tested for fit and build quality.

How long does a leather strap last on a 27mm watch like the Constellation?

A quality leather strap (alligator or natural calf) typically lasts 3-5 years with moderate daily use, depending on climate, frequency of wear, and maintenance. Prolonged exposure to sun and water accelerates aging. Milano Straps straps benefit from an 18-month warranty and are designed for longevity thanks to superior build quality and noble materials.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only